Larus cachinnans in Poland

(last update: August 16, 2020)

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cachinnans in Poland

National distribution

Zastów Karczmiski
Kępa Nadbrzeska
Jeziórko
Jankowice
Mietków Reservoir & Chwałów
Kozielno & Topola Reservoir
Mokrzec
Wytyckie Lake
Dankowice / Foskowiec Pond
Czorsztyn Reservoir
Kuźnica Warężyńska / Pogoria
Dwory

small colonies or single sites

Caspian Gull cachinnans P:S66 1CY, October 22 2018, Katwijk, the Netherlands. Picture: Mars Muusse.

Tertial pattern is pro-cach. Inner primary pattern also pro-cach. Two 2nd gen wing-coverts in right wing is strong indication pro-cach.
Head streaking in October is more pro-argentatus. Bold arrow pattern on 2nd gen scaps also more pro-tatus. Greater cov pattern with bold indents is also pro-tatus.

Data:
Plastiv YEL P:S66 and metal Gdansk PLG DN 36466, ringed on 18/06/2018 in a mixed colony "Caspian Gull colony / Larus cachinnans kolonia", dominated by cachinnans at location ZB. MIETKOWSKI, DOMANICE 1 KM N, MIETKÓW - POLAND, by ringer Paweł Grochowski.

Recoveries:
13/07/2018 Larus cachinnans, Zalew Mietkowski, Ujście Bystrzycy, wyspa, "korzenie" POLAND - Jarosław Słowikowski Kuling.
14/07/2018 Larus cachinnans, ZB. MIETKOWSKI, DOMANICE POLAND - Adam Loręcki
04/09/2018 Larus cachinnans, Texel - Sluftermonding NETHERLANDS - Robert van der Meer
07/09/2018 Larus cachinnans, Binnenwatering NETHERLANDS - Annelies Marijnis
18/10/2018 Larus cachinnans, Westkapelle NETHERLANDS - Marcel Klootwijk
22/10/2018 Larus argentatus/cachinnans, Katwijk NETHERLANDS - Mars Muusse